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//
// basic_raw_socket.hpp
// ~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#ifndef ASIO_BASIC_RAW_SOCKET_HPP
#define ASIO_BASIC_RAW_SOCKET_HPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#include <cstddef>
#include "asio/basic_socket.hpp"
#include "asio/detail/handler_type_requirements.hpp"
#include "asio/detail/throw_error.hpp"
#include "asio/detail/type_traits.hpp"
#include "asio/error.hpp"
#if defined(ASIO_ENABLE_OLD_SERVICES)
# include "asio/raw_socket_service.hpp"
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
#include "asio/detail/push_options.hpp"
namespace asio {
/// Provides raw-oriented socket functionality.
/**
* The basic_raw_socket class template provides asynchronous and blocking
* raw-oriented socket functionality.
*
* @par Thread Safety
* @e Distinct @e objects: Safe.@n
* @e Shared @e objects: Unsafe.
*/
template <typename Protocol
ASIO_SVC_TPARAM_DEF1(= raw_socket_service<Protocol>)>
class basic_raw_socket
: public basic_socket<Protocol ASIO_SVC_TARG>
{
public:
/// The native representation of a socket.
#if defined(GENERATING_DOCUMENTATION)
typedef implementation_defined native_handle_type;
#else
typedef typename basic_socket<
Protocol ASIO_SVC_TARG>::native_handle_type native_handle_type;
#endif
/// The protocol type.
typedef Protocol protocol_type;
/// The endpoint type.
typedef typename Protocol::endpoint endpoint_type;
/// Construct a basic_raw_socket without opening it.
/**
* This constructor creates a raw socket without opening it. The open()
* function must be called before data can be sent or received on the socket.
*
* @param io_context The io_context object that the raw socket will use
* to dispatch handlers for any asynchronous operations performed on the
* socket.
*/
explicit basic_raw_socket(asio::io_context& io_context)
: basic_socket<Protocol ASIO_SVC_TARG>(io_context)
{
}
/// Construct and open a basic_raw_socket.
/**
* This constructor creates and opens a raw socket.
*
* @param io_context The io_context object that the raw socket will use
* to dispatch handlers for any asynchronous operations performed on the
* socket.
*
* @param protocol An object specifying protocol parameters to be used.
*
* @throws asio::system_error Thrown on failure.
*/
basic_raw_socket(asio::io_context& io_context,
const protocol_type& protocol)
: basic_socket<Protocol ASIO_SVC_TARG>(io_context, protocol)
{
}
/// Construct a basic_raw_socket, opening it and binding it to the given
/// local endpoint.
/**
* This constructor creates a raw socket and automatically opens it bound
* to the specified endpoint on the local machine. The protocol used is the
* protocol associated with the given endpoint.
*
* @param io_context The io_context object that the raw socket will use
* to dispatch handlers for any asynchronous operations performed on the
* socket.
*
* @param endpoint An endpoint on the local machine to which the raw
* socket will be bound.
*
* @throws asio::system_error Thrown on failure.
*/
basic_raw_socket(asio::io_context& io_context,
const endpoint_type& endpoint)
: basic_socket<Protocol ASIO_SVC_TARG>(io_context, endpoint)
{
}
/// Construct a basic_raw_socket on an existing native socket.
/**
* This constructor creates a raw socket object to hold an existing
* native socket.
*
* @param io_context The io_context object that the raw socket will use
* to dispatch handlers for any asynchronous operations performed on the
* socket.
*
* @param protocol An object specifying protocol parameters to be used.
*
* @param native_socket The new underlying socket implementation.
*
* @throws asio::system_error Thrown on failure.
*/
basic_raw_socket(asio::io_context& io_context,
const protocol_type& protocol, const native_handle_type& native_socket)
: basic_socket<Protocol ASIO_SVC_TARG>(
io_context, protocol, native_socket)
{
}
#if defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
/// Move-construct a basic_raw_socket from another.
/**
* This constructor moves a raw socket from one object to another.
*
* @param other The other basic_raw_socket object from which the move
* will occur.
*
* @note Following the move, the moved-from object is in the same state as if
* constructed using the @c basic_raw_socket(io_context&) constructor.
*/
basic_raw_socket(basic_raw_socket&& other)
: basic_socket<Protocol ASIO_SVC_TARG>(std::move(other))
{
}
/// Move-assign a basic_raw_socket from another.
/**
* This assignment operator moves a raw socket from one object to another.
*
* @param other The other basic_raw_socket object from which the move
* will occur.
*
* @note Following the move, the moved-from object is in the same state as if
* constructed using the @c basic_raw_socket(io_context&) constructor.
*/
basic_raw_socket& operator=(basic_raw_socket&& other)
{
basic_socket<Protocol ASIO_SVC_TARG>::operator=(std::move(other));
return *this;
}
/// Move-construct a basic_raw_socket from a socket of another protocol type.
/**
* This constructor moves a raw socket from one object to another.
*
* @param other The other basic_raw_socket object from which the move will
* occur.
*
* @note Following the move, the moved-from object is in the same state as if
* constructed using the @c basic_raw_socket(io_context&) constructor.
*/
template <typename Protocol1 ASIO_SVC_TPARAM1>
basic_raw_socket(basic_raw_socket<Protocol1 ASIO_SVC_TARG1>&& other,
typename enable_if<is_convertible<Protocol1, Protocol>::value>::type* = 0)
: basic_socket<Protocol ASIO_SVC_TARG>(std::move(other))
{
}
/// Move-assign a basic_raw_socket from a socket of another protocol type.
/**
* This assignment operator moves a raw socket from one object to another.
*
* @param other The other basic_raw_socket object from which the move
* will occur.
*
* @note Following the move, the moved-from object is in the same state as if
* constructed using the @c basic_raw_socket(io_context&) constructor.
*/
template <typename Protocol1 ASIO_SVC_TPARAM1>
typename enable_if<is_convertible<Protocol1, Protocol>::value,
basic_raw_socket>::type& operator=(
basic_raw_socket<Protocol1 ASIO_SVC_TARG1>&& other)
{
basic_socket<Protocol ASIO_SVC_TARG>::operator=(std::move(other));
return *this;
}
#endif // defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
/// Destroys the socket.
/**
* This function destroys the socket, cancelling any outstanding asynchronous
* operations associated with the socket as if by calling @c cancel.
*/
~basic_raw_socket()
{
}
/// Send some data on a connected socket.
/**
* This function is used to send data on the raw socket. The function call
* will block until the data has been sent successfully or an error occurs.
*
* @param buffers One ore more data buffers to be sent on the socket.
*
* @returns The number of bytes sent.
*
* @throws asio::system_error Thrown on failure.
*
* @note The send operation can only be used with a connected socket. Use
* the send_to function to send data on an unconnected raw socket.
*
* @par Example
* To send a single data buffer use the @ref buffer function as follows:
* @code socket.send(asio::buffer(data, size)); @endcode
* See the @ref buffer documentation for information on sending multiple
* buffers in one go, and how to use it with arrays, boost::array or
* std::vector.
*/
template <typename ConstBufferSequence>
std::size_t send(const ConstBufferSequence& buffers)
{
asio::error_code ec;
std::size_t s = this->get_service().send(
this->get_implementation(), buffers, 0, ec);
asio::detail::throw_error(ec, "send");
return s;
}
/// Send some data on a connected socket.
/**
* This function is used to send data on the raw socket. The function call
* will block until the data has been sent successfully or an error occurs.
*
* @param buffers One ore more data buffers to be sent on the socket.
*
* @param flags Flags specifying how the send call is to be made.
*
* @returns The number of bytes sent.
*
* @throws asio::system_error Thrown on failure.
*
* @note The send operation can only be used with a connected socket. Use
* the send_to function to send data on an unconnected raw socket.
*/
template <typename ConstBufferSequence>
std::size_t send(const ConstBufferSequence& buffers,
socket_base::message_flags flags)
{
asio::error_code ec;
std::size_t s = this->get_service().send(
this->get_implementation(), buffers, flags, ec);
asio::detail::throw_error(ec, "send");
return s;
}
/// Send some data on a connected socket.
/**
* This function is used to send data on the raw socket. The function call
* will block until the data has been sent successfully or an error occurs.
*
* @param buffers One or more data buffers to be sent on the socket.
*
* @param flags Flags specifying how the send call is to be made.
*
* @param ec Set to indicate what error occurred, if any.
*
* @returns The number of bytes sent.
*
* @note The send operation can only be used with a connected socket. Use
* the send_to function to send data on an unconnected raw socket.
*/
template <typename ConstBufferSequence>
std::size_t send(const ConstBufferSequence& buffers,
socket_base::message_flags flags, asio::error_code& ec)
{
return this->get_service().send(
this->get_implementation(), buffers, flags, ec);
}
/// Start an asynchronous send on a connected socket.
/**
* This function is used to send data on the raw socket. The function call
* will block until the data has been sent successfully or an error occurs.
*
* @param buffers One or more data buffers to be sent on the socket. Although
* the buffers object may be copied as necessary, ownership of the underlying
* memory blocks is retained by the caller, which must guarantee that they
* remain valid until the handler is called.
*
* @param handler The handler to be called when the send operation completes.
* Copies will be made of the handler as required. The function signature of
* the handler must be:
* @code void handler(
* const asio::error_code& error, // Result of operation.
* std::size_t bytes_transferred // Number of bytes sent.
* ); @endcode
* Regardless of whether the asynchronous operation completes immediately or
* not, the handler will not be invoked from within this function. Invocation
* of the handler will be performed in a manner equivalent to using
* asio::io_context::post().
*
* @note The async_send operation can only be used with a connected socket.
* Use the async_send_to function to send data on an unconnected raw
* socket.
*
* @par Example
* To send a single data buffer use the @ref buffer function as follows:
* @code
* socket.async_send(asio::buffer(data, size), handler);
* @endcode
* See the @ref buffer documentation for information on sending multiple
* buffers in one go, and how to use it with arrays, boost::array or
* std::vector.
*/
template <typename ConstBufferSequence, typename WriteHandler>
ASIO_INITFN_RESULT_TYPE(WriteHandler,
void (asio::error_code, std::size_t))
async_send(const ConstBufferSequence& buffers,
ASIO_MOVE_ARG(WriteHandler) handler)
{
// If you get an error on the following line it means that your handler does
// not meet the documented type requirements for a WriteHandler.
ASIO_WRITE_HANDLER_CHECK(WriteHandler, handler) type_check;
#if defined(ASIO_ENABLE_OLD_SERVICES)
return this->get_service().async_send(this->get_implementation(),
buffers, 0, ASIO_MOVE_CAST(WriteHandler)(handler));
#else // defined(ASIO_ENABLE_OLD_SERVICES)
async_completion<WriteHandler,
void (asio::error_code, std::size_t)> init(handler);
this->get_service().async_send(this->get_implementation(),
buffers, 0, init.completion_handler);
return init.result.get();
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
}
/// Start an asynchronous send on a connected socket.
/**
* This function is used to send data on the raw socket. The function call
* will block until the data has been sent successfully or an error occurs.
*
* @param buffers One or more data buffers to be sent on the socket. Although
* the buffers object may be copied as necessary, ownership of the underlying
* memory blocks is retained by the caller, which must guarantee that they
* remain valid until the handler is called.
*
* @param flags Flags specifying how the send call is to be made.
*
* @param handler The handler to be called when the send operation completes.
* Copies will be made of the handler as required. The function signature of
* the handler must be:
* @code void handler(
* const asio::error_code& error, // Result of operation.
* std::size_t bytes_transferred // Number of bytes sent.
* ); @endcode
* Regardless of whether the asynchronous operation completes immediately or
* not, the handler will not be invoked from within this function. Invocation
* of the handler will be performed in a manner equivalent to using
* asio::io_context::post().
*
* @note The async_send operation can only be used with a connected socket.
* Use the async_send_to function to send data on an unconnected raw
* socket.
*/
template <typename ConstBufferSequence, typename WriteHandler>
ASIO_INITFN_RESULT_TYPE(WriteHandler,
void (asio::error_code, std::size_t))
async_send(const ConstBufferSequence& buffers,
socket_base::message_flags flags,
ASIO_MOVE_ARG(WriteHandler) handler)
{
// If you get an error on the following line it means that your handler does
// not meet the documented type requirements for a WriteHandler.
ASIO_WRITE_HANDLER_CHECK(WriteHandler, handler) type_check;
#if defined(ASIO_ENABLE_OLD_SERVICES)
return this->get_service().async_send(this->get_implementation(),
buffers, flags, ASIO_MOVE_CAST(WriteHandler)(handler));
#else // defined(ASIO_ENABLE_OLD_SERVICES)
async_completion<WriteHandler,
void (asio::error_code, std::size_t)> init(handler);
this->get_service().async_send(this->get_implementation(),
buffers, flags, init.completion_handler);
return init.result.get();
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
}
/// Send raw data to the specified endpoint.
/**
* This function is used to send raw data to the specified remote endpoint.
* The function call will block until the data has been sent successfully or
* an error occurs.
*
* @param buffers One or more data buffers to be sent to the remote endpoint.
*
* @param destination The remote endpoint to which the data will be sent.
*
* @returns The number of bytes sent.
*
* @throws asio::system_error Thrown on failure.
*
* @par Example
* To send a single data buffer use the @ref buffer function as follows:
* @code
* asio::ip::udp::endpoint destination(
* asio::ip::address::from_string("1.2.3.4"), 12345);
* socket.send_to(asio::buffer(data, size), destination);
* @endcode
* See the @ref buffer documentation for information on sending multiple
* buffers in one go, and how to use it with arrays, boost::array or
* std::vector.
*/
template <typename ConstBufferSequence>
std::size_t send_to(const ConstBufferSequence& buffers,
const endpoint_type& destination)
{
asio::error_code ec;
std::size_t s = this->get_service().send_to(
this->get_implementation(), buffers, destination, 0, ec);
asio::detail::throw_error(ec, "send_to");
return s;
}
/// Send raw data to the specified endpoint.
/**
* This function is used to send raw data to the specified remote endpoint.
* The function call will block until the data has been sent successfully or
* an error occurs.
*
* @param buffers One or more data buffers to be sent to the remote endpoint.
*
* @param destination The remote endpoint to which the data will be sent.
*
* @param flags Flags specifying how the send call is to be made.
*
* @returns The number of bytes sent.
*
* @throws asio::system_error Thrown on failure.
*/
template <typename ConstBufferSequence>
std::size_t send_to(const ConstBufferSequence& buffers,
const endpoint_type& destination, socket_base::message_flags flags)
{
asio::error_code ec;
std::size_t s = this->get_service().send_to(
this->get_implementation(), buffers, destination, flags, ec);
asio::detail::throw_error(ec, "send_to");
return s;
}
/// Send raw data to the specified endpoint.
/**
* This function is used to send raw data to the specified remote endpoint.
* The function call will block until the data has been sent successfully or
* an error occurs.
*
* @param buffers One or more data buffers to be sent to the remote endpoint.
*
* @param destination The remote endpoint to which the data will be sent.
*
* @param flags Flags specifying how the send call is to be made.
*
* @param ec Set to indicate what error occurred, if any.
*
* @returns The number of bytes sent.
*/
template <typename ConstBufferSequence>
std::size_t send_to(const ConstBufferSequence& buffers,
const endpoint_type& destination, socket_base::message_flags flags,
asio::error_code& ec)
{
return this->get_service().send_to(this->get_implementation(),
buffers, destination, flags, ec);
}
/// Start an asynchronous send.
/**
* This function is used to asynchronously send raw data to the specified
* remote endpoint. The function call always returns immediately.
*
* @param buffers One or more data buffers to be sent to the remote endpoint.
* Although the buffers object may be copied as necessary, ownership of the
* underlying memory blocks is retained by the caller, which must guarantee
* that they remain valid until the handler is called.
*
* @param destination The remote endpoint to which the data will be sent.
* Copies will be made of the endpoint as required.
*
* @param handler The handler to be called when the send operation completes.
* Copies will be made of the handler as required. The function signature of
* the handler must be:
* @code void handler(
* const asio::error_code& error, // Result of operation.
* std::size_t bytes_transferred // Number of bytes sent.
* ); @endcode
* Regardless of whether the asynchronous operation completes immediately or
* not, the handler will not be invoked from within this function. Invocation
* of the handler will be performed in a manner equivalent to using
* asio::io_context::post().
*
* @par Example
* To send a single data buffer use the @ref buffer function as follows:
* @code
* asio::ip::udp::endpoint destination(
* asio::ip::address::from_string("1.2.3.4"), 12345);
* socket.async_send_to(
* asio::buffer(data, size), destination, handler);
* @endcode
* See the @ref buffer documentation for information on sending multiple
* buffers in one go, and how to use it with arrays, boost::array or
* std::vector.
*/
template <typename ConstBufferSequence, typename WriteHandler>
ASIO_INITFN_RESULT_TYPE(WriteHandler,
void (asio::error_code, std::size_t))
async_send_to(const ConstBufferSequence& buffers,
const endpoint_type& destination,
ASIO_MOVE_ARG(WriteHandler) handler)
{
// If you get an error on the following line it means that your handler does
// not meet the documented type requirements for a WriteHandler.
ASIO_WRITE_HANDLER_CHECK(WriteHandler, handler) type_check;
#if defined(ASIO_ENABLE_OLD_SERVICES)
return this->get_service().async_send_to(this->get_implementation(),
buffers, destination, 0, ASIO_MOVE_CAST(WriteHandler)(handler));
#else // defined(ASIO_ENABLE_OLD_SERVICES)
async_completion<WriteHandler,
void (asio::error_code, std::size_t)> init(handler);
this->get_service().async_send_to(this->get_implementation(),
buffers, destination, 0, init.completion_handler);
return init.result.get();
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
}
/// Start an asynchronous send.
/**
* This function is used to asynchronously send raw data to the specified
* remote endpoint. The function call always returns immediately.
*
* @param buffers One or more data buffers to be sent to the remote endpoint.
* Although the buffers object may be copied as necessary, ownership of the
* underlying memory blocks is retained by the caller, which must guarantee
* that they remain valid until the handler is called.
*
* @param flags Flags specifying how the send call is to be made.
*
* @param destination The remote endpoint to which the data will be sent.
* Copies will be made of the endpoint as required.
*
* @param handler The handler to be called when the send operation completes.
* Copies will be made of the handler as required. The function signature of
* the handler must be:
* @code void handler(
* const asio::error_code& error, // Result of operation.
* std::size_t bytes_transferred // Number of bytes sent.
* ); @endcode
* Regardless of whether the asynchronous operation completes immediately or
* not, the handler will not be invoked from within this function. Invocation
* of the handler will be performed in a manner equivalent to using
* asio::io_context::post().
*/
template <typename ConstBufferSequence, typename WriteHandler>
ASIO_INITFN_RESULT_TYPE(WriteHandler,
void (asio::error_code, std::size_t))
async_send_to(const ConstBufferSequence& buffers,
const endpoint_type& destination, socket_base::message_flags flags,
ASIO_MOVE_ARG(WriteHandler) handler)
{
// If you get an error on the following line it means that your handler does
// not meet the documented type requirements for a WriteHandler.
ASIO_WRITE_HANDLER_CHECK(WriteHandler, handler) type_check;
#if defined(ASIO_ENABLE_OLD_SERVICES)
return this->get_service().async_send_to(
this->get_implementation(), buffers, destination, flags,
ASIO_MOVE_CAST(WriteHandler)(handler));
#else // defined(ASIO_ENABLE_OLD_SERVICES)
async_completion<WriteHandler,
void (asio::error_code, std::size_t)> init(handler);
this->get_service().async_send_to(
this->get_implementation(), buffers, destination, flags,
init.completion_handler);
return init.result.get();
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
}
/// Receive some data on a connected socket.
/**
* This function is used to receive data on the raw socket. The function
* call will block until data has been received successfully or an error
* occurs.
*
* @param buffers One or more buffers into which the data will be received.
*
* @returns The number of bytes received.
*
* @throws asio::system_error Thrown on failure.
*
* @note The receive operation can only be used with a connected socket. Use
* the receive_from function to receive data on an unconnected raw
* socket.
*
* @par Example
* To receive into a single data buffer use the @ref buffer function as
* follows:
* @code socket.receive(asio::buffer(data, size)); @endcode
* See the @ref buffer documentation for information on receiving into
* multiple buffers in one go, and how to use it with arrays, boost::array or
* std::vector.
*/
template <typename MutableBufferSequence>
std::size_t receive(const MutableBufferSequence& buffers)
{
asio::error_code ec;
std::size_t s = this->get_service().receive(
this->get_implementation(), buffers, 0, ec);
asio::detail::throw_error(ec, "receive");
return s;
}
/// Receive some data on a connected socket.
/**
* This function is used to receive data on the raw socket. The function
* call will block until data has been received successfully or an error
* occurs.
*
* @param buffers One or more buffers into which the data will be received.
*
* @param flags Flags specifying how the receive call is to be made.
*
* @returns The number of bytes received.
*
* @throws asio::system_error Thrown on failure.
*
* @note The receive operation can only be used with a connected socket. Use
* the receive_from function to receive data on an unconnected raw
* socket.
*/
template <typename MutableBufferSequence>
std::size_t receive(const MutableBufferSequence& buffers,
socket_base::message_flags flags)
{
asio::error_code ec;
std::size_t s = this->get_service().receive(
this->get_implementation(), buffers, flags, ec);
asio::detail::throw_error(ec, "receive");
return s;
}
/// Receive some data on a connected socket.
/**
* This function is used to receive data on the raw socket. The function
* call will block until data has been received successfully or an error
* occurs.
*
* @param buffers One or more buffers into which the data will be received.
*
* @param flags Flags specifying how the receive call is to be made.
*
* @param ec Set to indicate what error occurred, if any.
*
* @returns The number of bytes received.
*
* @note The receive operation can only be used with a connected socket. Use
* the receive_from function to receive data on an unconnected raw
* socket.
*/
template <typename MutableBufferSequence>
std::size_t receive(const MutableBufferSequence& buffers,
socket_base::message_flags flags, asio::error_code& ec)
{
return this->get_service().receive(
this->get_implementation(), buffers, flags, ec);
}
/// Start an asynchronous receive on a connected socket.
/**
* This function is used to asynchronously receive data from the raw
* socket. The function call always returns immediately.
*
* @param buffers One or more buffers into which the data will be received.
* Although the buffers object may be copied as necessary, ownership of the
* underlying memory blocks is retained by the caller, which must guarantee
* that they remain valid until the handler is called.
*
* @param handler The handler to be called when the receive operation
* completes. Copies will be made of the handler as required. The function
* signature of the handler must be:
* @code void handler(
* const asio::error_code& error, // Result of operation.
* std::size_t bytes_transferred // Number of bytes received.
* ); @endcode
* Regardless of whether the asynchronous operation completes immediately or
* not, the handler will not be invoked from within this function. Invocation
* of the handler will be performed in a manner equivalent to using
* asio::io_context::post().
*
* @note The async_receive operation can only be used with a connected socket.
* Use the async_receive_from function to receive data on an unconnected
* raw socket.
*
* @par Example
* To receive into a single data buffer use the @ref buffer function as
* follows:
* @code
* socket.async_receive(asio::buffer(data, size), handler);
* @endcode
* See the @ref buffer documentation for information on receiving into
* multiple buffers in one go, and how to use it with arrays, boost::array or
* std::vector.
*/
template <typename MutableBufferSequence, typename ReadHandler>
ASIO_INITFN_RESULT_TYPE(ReadHandler,
void (asio::error_code, std::size_t))
async_receive(const MutableBufferSequence& buffers,
ASIO_MOVE_ARG(ReadHandler) handler)
{
// If you get an error on the following line it means that your handler does
// not meet the documented type requirements for a ReadHandler.
ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
#if defined(ASIO_ENABLE_OLD_SERVICES)
return this->get_service().async_receive(this->get_implementation(),
buffers, 0, ASIO_MOVE_CAST(ReadHandler)(handler));
#else // defined(ASIO_ENABLE_OLD_SERVICES)
async_completion<ReadHandler,
void (asio::error_code, std::size_t)> init(handler);
this->get_service().async_receive(this->get_implementation(),
buffers, 0, init.completion_handler);
return init.result.get();
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
}
/// Start an asynchronous receive on a connected socket.
/**
* This function is used to asynchronously receive data from the raw
* socket. The function call always returns immediately.
*
* @param buffers One or more buffers into which the data will be received.
* Although the buffers object may be copied as necessary, ownership of the
* underlying memory blocks is retained by the caller, which must guarantee
* that they remain valid until the handler is called.
*
* @param flags Flags specifying how the receive call is to be made.
*
* @param handler The handler to be called when the receive operation
* completes. Copies will be made of the handler as required. The function
* signature of the handler must be:
* @code void handler(
* const asio::error_code& error, // Result of operation.
* std::size_t bytes_transferred // Number of bytes received.
* ); @endcode
* Regardless of whether the asynchronous operation completes immediately or
* not, the handler will not be invoked from within this function. Invocation
* of the handler will be performed in a manner equivalent to using
* asio::io_context::post().
*
* @note The async_receive operation can only be used with a connected socket.
* Use the async_receive_from function to receive data on an unconnected
* raw socket.
*/
template <typename MutableBufferSequence, typename ReadHandler>
ASIO_INITFN_RESULT_TYPE(ReadHandler,
void (asio::error_code, std::size_t))
async_receive(const MutableBufferSequence& buffers,
socket_base::message_flags flags,
ASIO_MOVE_ARG(ReadHandler) handler)
{
// If you get an error on the following line it means that your handler does
// not meet the documented type requirements for a ReadHandler.
ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
#if defined(ASIO_ENABLE_OLD_SERVICES)
return this->get_service().async_receive(this->get_implementation(),
buffers, flags, ASIO_MOVE_CAST(ReadHandler)(handler));
#else // defined(ASIO_ENABLE_OLD_SERVICES)
async_completion<ReadHandler,
void (asio::error_code, std::size_t)> init(handler);
this->get_service().async_receive(this->get_implementation(),
buffers, flags, init.completion_handler);
return init.result.get();
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
}
/// Receive raw data with the endpoint of the sender.
/**
* This function is used to receive raw data. The function call will block
* until data has been received successfully or an error occurs.
*
* @param buffers One or more buffers into which the data will be received.
*
* @param sender_endpoint An endpoint object that receives the endpoint of
* the remote sender of the data.
*
* @returns The number of bytes received.
*
* @throws asio::system_error Thrown on failure.
*
* @par Example
* To receive into a single data buffer use the @ref buffer function as
* follows:
* @code
* asio::ip::udp::endpoint sender_endpoint;
* socket.receive_from(
* asio::buffer(data, size), sender_endpoint);
* @endcode
* See the @ref buffer documentation for information on receiving into
* multiple buffers in one go, and how to use it with arrays, boost::array or
* std::vector.
*/
template <typename MutableBufferSequence>
std::size_t receive_from(const MutableBufferSequence& buffers,
endpoint_type& sender_endpoint)
{
asio::error_code ec;
std::size_t s = this->get_service().receive_from(
this->get_implementation(), buffers, sender_endpoint, 0, ec);
asio::detail::throw_error(ec, "receive_from");
return s;
}
/// Receive raw data with the endpoint of the sender.
/**
* This function is used to receive raw data. The function call will block
* until data has been received successfully or an error occurs.
*
* @param buffers One or more buffers into which the data will be received.
*
* @param sender_endpoint An endpoint object that receives the endpoint of
* the remote sender of the data.
*
* @param flags Flags specifying how the receive call is to be made.
*
* @returns The number of bytes received.
*
* @throws asio::system_error Thrown on failure.
*/
template <typename MutableBufferSequence>
std::size_t receive_from(const MutableBufferSequence& buffers,
endpoint_type& sender_endpoint, socket_base::message_flags flags)
{
asio::error_code ec;
std::size_t s = this->get_service().receive_from(
this->get_implementation(), buffers, sender_endpoint, flags, ec);
asio::detail::throw_error(ec, "receive_from");
return s;
}
/// Receive raw data with the endpoint of the sender.
/**
* This function is used to receive raw data. The function call will block
* until data has been received successfully or an error occurs.
*
* @param buffers One or more buffers into which the data will be received.
*
* @param sender_endpoint An endpoint object that receives the endpoint of
* the remote sender of the data.
*
* @param flags Flags specifying how the receive call is to be made.
*
* @param ec Set to indicate what error occurred, if any.
*
* @returns The number of bytes received.
*/
template <typename MutableBufferSequence>
std::size_t receive_from(const MutableBufferSequence& buffers,
endpoint_type& sender_endpoint, socket_base::message_flags flags,
asio::error_code& ec)
{
return this->get_service().receive_from(this->get_implementation(),
buffers, sender_endpoint, flags, ec);
}
/// Start an asynchronous receive.
/**
* This function is used to asynchronously receive raw data. The function
* call always returns immediately.
*
* @param buffers One or more buffers into which the data will be received.
* Although the buffers object may be copied as necessary, ownership of the
* underlying memory blocks is retained by the caller, which must guarantee
* that they remain valid until the handler is called.
*
* @param sender_endpoint An endpoint object that receives the endpoint of
* the remote sender of the data. Ownership of the sender_endpoint object
* is retained by the caller, which must guarantee that it is valid until the
* handler is called.
*
* @param handler The handler to be called when the receive operation
* completes. Copies will be made of the handler as required. The function
* signature of the handler must be:
* @code void handler(
* const asio::error_code& error, // Result of operation.
* std::size_t bytes_transferred // Number of bytes received.
* ); @endcode
* Regardless of whether the asynchronous operation completes immediately or
* not, the handler will not be invoked from within this function. Invocation
* of the handler will be performed in a manner equivalent to using
* asio::io_context::post().
*
* @par Example
* To receive into a single data buffer use the @ref buffer function as
* follows:
* @code socket.async_receive_from(
* asio::buffer(data, size), 0, sender_endpoint, handler); @endcode
* See the @ref buffer documentation for information on receiving into
* multiple buffers in one go, and how to use it with arrays, boost::array or
* std::vector.
*/
template <typename MutableBufferSequence, typename ReadHandler>
ASIO_INITFN_RESULT_TYPE(ReadHandler,
void (asio::error_code, std::size_t))
async_receive_from(const MutableBufferSequence& buffers,
endpoint_type& sender_endpoint,
ASIO_MOVE_ARG(ReadHandler) handler)
{
// If you get an error on the following line it means that your handler does
// not meet the documented type requirements for a ReadHandler.
ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
#if defined(ASIO_ENABLE_OLD_SERVICES)
return this->get_service().async_receive_from(
this->get_implementation(), buffers, sender_endpoint, 0,
ASIO_MOVE_CAST(ReadHandler)(handler));
#else // defined(ASIO_ENABLE_OLD_SERVICES)
async_completion<ReadHandler,
void (asio::error_code, std::size_t)> init(handler);
this->get_service().async_receive_from(
this->get_implementation(), buffers, sender_endpoint, 0,
init.completion_handler);
return init.result.get();
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
}
/// Start an asynchronous receive.
/**
* This function is used to asynchronously receive raw data. The function
* call always returns immediately.
*
* @param buffers One or more buffers into which the data will be received.
* Although the buffers object may be copied as necessary, ownership of the
* underlying memory blocks is retained by the caller, which must guarantee
* that they remain valid until the handler is called.
*
* @param sender_endpoint An endpoint object that receives the endpoint of
* the remote sender of the data. Ownership of the sender_endpoint object
* is retained by the caller, which must guarantee that it is valid until the
* handler is called.
*
* @param flags Flags specifying how the receive call is to be made.
*
* @param handler The handler to be called when the receive operation
* completes. Copies will be made of the handler as required. The function
* signature of the handler must be:
* @code void handler(
* const asio::error_code& error, // Result of operation.
* std::size_t bytes_transferred // Number of bytes received.
* ); @endcode
* Regardless of whether the asynchronous operation completes immediately or
* not, the handler will not be invoked from within this function. Invocation
* of the handler will be performed in a manner equivalent to using
* asio::io_context::post().
*/
template <typename MutableBufferSequence, typename ReadHandler>
ASIO_INITFN_RESULT_TYPE(ReadHandler,
void (asio::error_code, std::size_t))
async_receive_from(const MutableBufferSequence& buffers,
endpoint_type& sender_endpoint, socket_base::message_flags flags,
ASIO_MOVE_ARG(ReadHandler) handler)
{
// If you get an error on the following line it means that your handler does
// not meet the documented type requirements for a ReadHandler.
ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;
#if defined(ASIO_ENABLE_OLD_SERVICES)
return this->get_service().async_receive_from(
this->get_implementation(), buffers, sender_endpoint, flags,
ASIO_MOVE_CAST(ReadHandler)(handler));
#else // defined(ASIO_ENABLE_OLD_SERVICES)
async_completion<ReadHandler,
void (asio::error_code, std::size_t)> init(handler);
this->get_service().async_receive_from(
this->get_implementation(), buffers, sender_endpoint, flags,
init.completion_handler);
return init.result.get();
#endif // defined(ASIO_ENABLE_OLD_SERVICES)
}
};
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // ASIO_BASIC_RAW_SOCKET_HPP
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